Question
An airplane flew 7200 km from Country Q to Country R at a speed of 720 km/h. It then covered 15600 km from Country R to Country S at a speed of 780 km/h. Find the time taken for the whole journey.
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An airplane flew 7200 km from Country Q to Country R at a speed of 720 km/h. It then covered 15600 km from Country R to Country S at a speed of 780 km/h. Find the time taken for the whole journey.